Conrad parallel port radio clock

Synopsis

Address: 127.127.35.u
Reference ID: PCF
Driver ID: PCF
Parallel Port: /dev/pcfclocku

Description

This driver supports the parallel port radio clocks sold by Conrad Electronic under order numbers 967602 and 642002. The battery-powered radio clock is put between a parallel port and your printer. It receives the legal German time, which is either CET or CEST, from the DCF77 transmitter and uses it to set internal quartz clock. The DCF77 transmitter is located near to Frankfurt/Main and covers a radius of more than 1500 kilometers.

The driver requires that the pcfclock device driver be installed. A device driver for Linux 2.2 is available at the pcfclock driver page.

The driver uses C library functions to convert the received timecode to UTC and therefore requires that the local timezone be CET/CEST. If your server is not located in Central Europe, you have to set the environment variable TZ to CET before ntpd is started.

Monitor Data

Each timecode is written to the clockstats file in the format YYYY MM DD HH MI SS.

Fudge Factors

time1 time

Specifies the time offset calibration factor, in seconds and fraction, with default 0.0.

time2 time

Not used by this driver.

stratum number

Specifies the driver stratum, in decimal from 0 to 15, with default 0.

refid string

Specifies the driver reference identifier, an ASCII string from one to four characters, with default PCF.

flag1 0 | 1

Not used by this driver.

flag2 0 | 1

Not used by this driver.

flag3 0 | 1

Not used by this driver.

flag4 0 | 1

Not used by this driver.

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